PRIME Observation Log 2025/05/19

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Raw Log (Time is in SA time)
Ramp Log (Time is in UT)
CCMain Error Log (Time is in SA time)
Observation Log (Time is in UT)

Date: 2025/05/19
Local observer: Ryusei
Remote observer:
Weather: cloudy
Comment:
Detector Temperature: 113.99996 +- 0.00106 K
ImageAcquisitionErrors occurred 0 times

Expected Time
Twilight Flat Time
(Sun altitude = -5.5°)
Evening 18:08:11
Morning 06:58:37
Science Observation
(Sun altitude < -10°)
Start 18:30:41
End 06:36:05
Bulge Observation
(Sun alt. < -10° & GB alt. > 22°)
Start 20:47:24
End 06:36:05


Observed Fraction
Actually Observed Time
(hh:mm:ss) 		Expected Observation Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Total Time 09:57:35 12:05:24 0.824
GB Time 08:12:33 09:48:41 0.837
Non-GB Time 01:45:02 02:16:43 0.768


Institute Statistics
- ALLSKY time is equally distributed to each institute
Institute Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
GB 4760 03:46:53 08:12:33 0.461
SAAO 227 00:10:49 00:26:15 0.412
OU 227 00:10:49 00:26:15 0.412
NASA 227 00:10:49 00:26:15 0.412
ABC 227 00:10:49 00:26:15 0.412


Type Statistics
Type Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
all_sky_grid 908 00:43:16 01:45:02 0.412
Bulge 4616 03:40:01 07:54:20 0.464
SKY 144 00:06:51 00:18:12 0.377


Target Statistics
Target Total Frame Total Exposure
(hh:mm:ss) 		Total Observation
(hh:mm:ss) 		Efficiency
(exp./obs.)
field14920_test 28 00:01:20 00:18:04 0.074
field14920 40 00:01:54 00:04:06 0.463
field14921 40 00:01:54 00:03:47 0.503
field14922 40 00:01:54 00:03:50 0.497
field14923 40 00:01:54 00:03:47 0.503
field14924 40 00:01:54 00:03:50 0.497
field14925 40 00:01:54 00:03:50 0.497
field14926 40 00:01:54 00:03:52 0.491
field14927 40 00:01:54 00:03:55 0.485
field14928 40 00:01:54 00:03:50 0.497
field14929 40 00:01:54 00:03:50 0.497
field14930 40 00:01:54 00:04:06 0.463
field14931 40 00:01:54 00:03:47 0.503
field14932 40 00:01:54 00:03:47 0.503
field14933 40 00:01:54 00:03:47 0.503
field14934 40 00:01:54 00:03:50 0.497
field14935 40 00:01:54 00:03:52 0.491
field14936 40 00:01:54 00:03:52 0.491
field14937 40 00:01:54 00:03:52 0.491
field14938 40 00:01:54 00:03:50 0.497
field14939 40 00:01:54 00:03:52 0.491
field14940 40 00:01:54 00:03:50 0.497
field14941 40 00:01:54 00:05:47 0.329
GB63_test OJ 60 00:02:51 00:16:36 0.172
GB63_dither OJ 24 00:01:08 00:02:16 0.503
GB62_dither OJ 24 00:01:08 00:02:19 0.493
GB61_dither OJ 24 00:01:08 00:02:19 0.493
GB60_dither OJ 24 00:01:08 00:02:19 0.493
GB59_dither OJ 24 00:01:08 00:02:21 0.484
GB58_dither OJ 24 00:01:08 00:02:19 0.493
GB57_dither OJ 24 00:01:08 00:02:19 0.493
GB74_dither OJ 24 00:01:08 00:02:21 0.484
GB75_dither OJ 24 00:01:08 00:02:21 0.484
GB76_dither OJ 24 00:01:08 00:02:19 0.493
GB77_dither OJ 24 00:01:08 00:02:19 0.493
GB78_dither OJ 24 00:01:08 00:02:16 0.503
GB79_dither OJ 24 00:01:08 00:02:16 0.503
GB80_dither OJ 24 00:01:08 00:02:21 0.484
GB97_dither OJ 24 00:01:08 00:02:19 0.493
GB96_dither OJ 24 00:01:08 00:02:16 0.503
GB95_dither OJ 24 00:01:08 00:02:19 0.493
GB94_dither OJ 24 00:01:08 00:02:21 0.484
GB93_dither OJ 24 00:01:08 00:02:19 0.493
GB92_dither OJ 24 00:01:08 00:02:19 0.493
GB91_dither OJ 24 00:01:08 00:02:27 0.465
GB108_dither OJ 24 00:01:08 00:02:19 0.493
GB109_dither OJ 24 00:01:08 00:02:16 0.503
GB110_dither OJ 24 00:01:08 00:02:21 0.484
GB111_dither OJ 24 00:01:08 00:02:21 0.484
GB112_dither OJ 24 00:01:08 00:02:19 0.493
GB113_dither OJ 24 00:01:08 00:02:19 0.493
GB114_dither OJ 24 00:01:08 00:02:21 0.484
GB131_dither OJ 24 00:01:08 00:02:19 0.493
GB130_dither OJ 24 00:01:08 00:02:19 0.493
GB129_dither OJ 24 00:01:08 00:02:19 0.493
GB128_dither OJ 24 00:01:08 00:02:19 0.493
GB127_dither OJ 24 00:01:08 00:02:19 0.493
GB126_dither OJ 24 00:01:08 00:02:21 0.484
GB125_dither OJ 24 00:01:08 00:02:27 0.465
GCsky 144 00:06:51 00:18:12 0.377
GB63_test OH 16 00:00:45 00:03:59 0.191
GB63_dither OH 120 00:05:43 00:11:35 0.493
GB62_dither OH 120 00:05:43 00:11:47 0.485
GB61_dither OH 120 00:05:43 00:11:41 0.489
GB60_dither OH 120 00:05:43 00:11:41 0.489
GB59_dither OH 120 00:05:43 00:11:44 0.487
GB58_dither OH 120 00:05:43 00:11:38 0.491
GB57_dither OH 120 00:05:43 00:11:35 0.493
GB74_dither OH 120 00:05:43 00:11:44 0.487
GB75_dither OH 120 00:05:43 00:11:44 0.487
GB76_dither OH 120 00:05:43 00:11:44 0.487
GB77_dither OH 120 00:05:43 00:11:38 0.491
GB78_dither OH 120 00:05:43 00:11:41 0.489
GB79_dither OH 120 00:05:43 00:11:44 0.487
GB80_dither OH 120 00:05:43 00:11:54 0.480
GB97_dither OH 96 00:04:34 00:09:19 0.491
GB96_dither OH 96 00:04:34 00:09:25 0.486
GB95_dither OH 96 00:04:34 00:09:19 0.491
GB94_dither OH 96 00:04:34 00:09:25 0.486
GB93_dither OH 96 00:04:34 00:09:19 0.491
GB92_dither OH 96 00:04:34 00:09:22 0.488
GB91_dither OH 96 00:04:34 00:09:22 0.488
GB108_dither OH 96 00:04:34 00:09:22 0.488
GB109_dither OH 96 00:04:34 00:09:25 0.486
GB110_dither OH 96 00:04:34 00:09:22 0.488
GB111_dither OH 96 00:04:34 00:09:25 0.486
GB112_dither OH 96 00:04:34 00:09:22 0.488
GB113_dither OH 96 00:04:34 00:09:38 0.475
GB114_dither OH 96 00:04:34 00:09:44 0.470
GB131_dither OH 96 00:04:34 00:09:25 0.486
GB130_dither OH 96 00:04:34 00:10:29 0.436
GB129_dither OH 96 00:04:34 00:09:22 0.488
GB128_dither OH 96 00:04:34 00:09:25 0.486
GB127_dither OH 96 00:04:34 00:09:27 0.484
GB126_dither OH 96 00:04:34 00:09:30 0.481
GB125_dither OH 96 00:04:34 00:10:32 0.434
GB114_test OH 4 00:00:11 00:08:05 0.024










Stats so far in 2025
Monthly observed fraction so far in 2025
Month Observed Time
(hh:mm:ss) 		Expected Time
(hh:mm:ss) 		Observed Fraction
(observed/expected)
Jan 103:35:29 259:42:08 0.399
Feb 53:54:42 259:20:18 0.208
Mar 158:57:47 319:07:20 0.498
Apr 161:02:39 338:08:53 0.476
May 144:17:56 226:12:51 0.638

Observed time so far in 2025
- Total time of each institute is calculated by the following
    [All observation time in 2025] = [Observed time so far] + [Remaining time in the future]
    [Remaining time in the future] = [Clear sky fraction] x [Remaining night time (Sun alt. < -10°)]
    
    [GB observation time in 2025] = [Observed GB time so far] + [Remaining GB time in the future]
    [Remaining GB time in the future] = [Clear sky fraction] x [Remaining GB night time (Sun alt. < -10° & GB alt. > 22°)]
    
    [Non-GB observation time in 2025] = [All observation time in 2025] - [GB observation time in 2025]
    
    [OU, NASA, ABC time in 2025] = 0.24 x [Non-GB observation time in 2025]
    [SAAO time in 2025] = 0.28 x [Non-GB observation time in 2025]
    
- ALLSKY time is equally distributed to each institute
- ToO time is distributed to each institute based on input of observer of each date
- Clear sky fraction of (0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5) is assumed for (Jan, ..., Dec) in the calculation of the remaining observation time
All
(hh:mm:ss) 		GB
(hh:mm:ss) 		Non-GB
(hh:mm:ss) 		SAAO
(hh:mm:ss) 		OU
(hh:mm:ss) 		NASA
(hh:mm:ss) 		ABC
(hh:mm:ss) 		CALIB
(hh:mm:ss)
Total 1809:20:11 920:55:06 888:25:05 248:45:25 213:13:13 213:13:13 213:13:13 136:30:30
Observed 621:41:59
(34.36%)		 289:01:11
(31.38%)		 332:40:48
(37.45%)		 49:56:40
(20.08%)		 79:24:54
(37.25%)		 159:15:30
(74.69%)		 44:03:43
(20.66%)		 136:30:30
(N/A)
Remaining 1187:38:12
(65.64%)		 631:53:54
(68.62%)		 555:44:17
(62.55%)		 198:48:45
(79.92%)		 133:48:19
(62.75%)		 53:57:42
(25.31%)		 169:09:30
(79.34%)		 00:00:00
(N/A)











Camera status (2025/05/19)



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